Device for handling a repair piece for a furnace



Jan. 31, J V SALM] DEVICE FOR HANDLING A REPAIR PIECE FOR A FURNACE Filed Dec. 5, 1958 2 Sheets-Sheet l Inventor John M. .Sa/m/ A florney J. V. SALMI Jan. 31, 1961 DEVICE FOR HANDLING A REPAIR PIECE FOR A FURNACE 2 Sheets-Sheet 2 Filed Dec. 5, 1958 lnven/or John 1 Sa/m/ HIM/ M Attorney United States Patent DEVICE FOR HANDLING A REPAIR PIECE FOR A FURNACE John V. Salmi, Morrlsville, Pm, assignor to United States Steel Corporation, a corporation of New Jersey Filed Dec. 5, 1958, Set. No. 778,443

4 Claims. (Cl. 214-46) This invention relates to a device for handlinga repair piece for a furnace and more particularly for inserting a repair piece behind the buckstays of an open hearth furnace. The repair piece may be made up in a manner similar to that disclosed in Kirk Patent No. 2,611,330, dated September 23, 1952. The device shown therein for handling the repair piece is suitable only when there is a large opening provided for insertion of the repair piece. Cain Patent No. 2,408,016, dated September 24, 1946, also discloses a device for handling a repair piece but this device is also useful only when a large opening is provided. Modern open hearth furnaces have a wider space between doors than older furnaces so that it is very diflicult to use either of the patented devices for inserting a repair unit behind the buckstays between furnace doors. The space between the buckstays is less than the width of the wall which must be replaced so that the repair unit cannot be inserted directly through the opening which is to be rebuilt with refractory brick.

It is therefore an object of my invention to provide a device for handling a repair piece and inserting the same through an opening in the furnace wall in which the repair piece has a width greater than the width of the opening and a thickness less than the width of the opening.

This and other objects will be more apparent after referring to the following specification and attached drawings, in which:

Figure l is a perspective view of a segment of an open hearth furnace showing a wall segment being replaced;

Figure 2 is a perspective view of a repair unit;

Figure 3 is a perspective view of the device of my invention;

Figure 4 is a plan view of my device attached to the peel arm of a charging machine and carrying a repair unit;

Figure 5 is a side elevation of the device of Figure 4; and

Figure 6 is an enlarged view of a portion of Figure 5 with the repair unit omitted.

Referring more particularly to the drawings, the reference numeral 2 indicates spaced apart buckstays having an opening 4 therebetween which must be filled with refractory brick. The bottom of the opening 4 has a horizontal sill 6. A repair piece 8 having two vertically spaced horizontal openings 10 therein is inserted into the opening 4 in a manner to be described hereinafter. The repair piece 8 is preferably made of metal clad basic bricks 12 held together by strapping 14. Steel anchor plates 16 are preferably provided between some of the courses of bricks.

The device of my, invention includes a bracket or adapter 18 having a horizontal opening 20 therein and a pair of vertically spaced horizontal arms 22 which have sockets 24 welded thereto. A paddle holder 26 is mounted on a charging machine peel 28 with the forward end of the paddle holder 26 being received in the opening 20. A bolt 30 passes through aligned holes in the bracket 18 and paddle holder 26 to hold the bracket 18 on the charging machine paddle holder 26. A shaft 32 is rotatably received in the socket 24 and has a pair of vertically spaced horizontal arms 34 welded thereto. The arms 34 are spaced apart the same distance as the holes 10 and are adapted to be received therein. A vertical hole 36 is provided in the upper arm 22 and socket 24 and a matching vertical hole 38 is provided in the upper arm 34. The holes 36.and 38 are in alignment when the arms 34 extend forwardly from the brack t 18 as shown in Figure 5. A pin 40 is fastened to the bracket 18 by means of a chain 42 and is adapted to lock the shaft 32 from rotation when the arms 34 face forwardly. An L-shaped locking, arm44 is pivotally mounted on the rear end of bracket 18.

The operation of my device is as follows: After scrap has been charged into the furnace th brick in the old front wall section is knocked out and the sill 6 prepared for the repair piece 8. The open hearth charging machine, not shown, with the bracket 18 mounted thereon inserts the support arms 34 into the openings 10. The peel 28 is raised and the repair piece 8 is then turned to a position parallel with the peel as shown in broken line in Figure 4. The locking arm 44 is then rotated to the broken line position shown in Figure 4 to hold the end of the repair piece 8 from swinging while the charging machine is in motion. After the charging machine is positioned directly in front of the opening 4, the locking arm 44 is released and the repair piece 8 and bracket 18 are inserted between the buckstays 2 through opening 4. After the repair piece 8 and bracket 18 are inside the furnace the repair piece 8 is rotated with a rod (not shown) to move it back to its original position parallel to the inner face of the buckstays 2. In the meantime pin 40 has been inserted in the opening 36 and when the arms 34 are in their forward position the pin 40 will drop into the hole 38 to lock the assembly in position. The repair piece 8 is moved rearwardly until it is against the buckstays 2 and is then set down on the sill 6, after which the arms 34 are withdrawn by means of peel 28. The anchor plates 16 are then fastened to the buckstays 2 in any suitable manner after which the openings 10 and any space around the repair piece 8 are filled with brick and grout.

While one embodiment of my invention has been shown and described it will be apparent that other adaptations and modifications may be made without departing from the scope of the following claims.

I claim:

1. A device for handling a repair piece for a furnace and inserting the same through an opening in the furnace wall, said repair piece having a width greater than the width of said opening and a thickness substantially less than the width of said opening and having a horizontal hole in the face thereof, which device comprises means for attachment to a charging machine, a bracket, a vertical shaft rotatably mounted on the furnace end of said bracket, and an arm attached to said shaft for insertion in the hole of said repair piece, said arm being of sufficient length that the repair piece supported thereon clears the bracket so that the repair piece may be moved from a position in front of said bracket to a position substantially normal thereto alongside said bracket.

2. A device for handling a repair piece for a furnace and inserting the same through an opening in the furnace wall, said repair piece having a width greater than the width of said opening and a thickness substantially less than the width of said opening and having a horizontal hole in the face thereof, which device comprises means for attachment to a charging machine, a bracket, a vertical shaft rotatably mounted on the furnace end of said bracket, an arm attached to said shaft for insertion in the hole of said repair piece, said arm being of sufficient length that the repair piece supported thereon clears the bracket so that the repair piece may be moved from a position in front of said bracket to a position substantially normal thereto alongside said bracket, a locking arm pivotally mounted on the rear of said bracket and movable .to a position to engage said repair piece in its last named position, and means for locking said shaft from rotary movement when the repair piece is in its first named position.

3. A device for handling a repair piece for a furnace and inserting the same through an opening in the furnace wall, said repair piece having a width greater than the width of said opening and a thickness substantially less than the width of said opening and having vertically spaced horizontal holes in the face thereof, which device comprises means for attachment to acharging machine, a bracket having a pair of vertically spaced horizontal arms on the furnace end thereof, a socket on each arm on the side facing the other arm, a vertical shaft having its ends rotatably mounted in said sockets, and a second pair of vertically spaced horizontal arms attached to said shaft and being spaced apart substantially the same distance as said holes and adapted to be received therein, said second pair of arms being of suficient length that the repair piece supported thereon clears the bracket so that the repair piece may be moved from a position in front of said bracket to a position substantially normal thereto alongside said bracket.

4. A device for handling a repair piece for a furnace and inserting the same through an opening in the furnace wall, said repair piece having a width substantially greater than the width of said opening and a thickness less than the width of said opening and having vertically spaced horizontal holes in the face thereof, which device comprises means for attachment to a charging machine, a bracket having a pair of vertically spaced horizontal arms on the furnace, end thereof, a socket on each arm on the side facing the other arm, a vertical shaft having its ends rotatably mounted in said sockets, a second pair of vertically spaced horizontal arms attached to said shaft and being spaced apart substantially the same distance as said holes and adapted to be received therein, said second pair of arms being of suflicient length that the repair piece supported thereon clears the bracket so that the repair piece may be moved from a position in front of said bracket to a position substantially normal thereto alongside said bracket, a locking arm pivotally mounted on the rear of said bracket and movable to a position to engage said repair piece in its last named position, the upper arm of each of said pair of arms having aligned holes therein, and a pin adapted to be received in said aligned holes when the repair piece is in its first named position.

References Cited in the file of this patent UNITED STATES PATENTS 

